Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 5 |
7 | 17 |
8 | 43 |
9 | 145 |
10 | 633 |
11 | 4131 |
12 | 31831 |
13 | 267243 |
14 | 2665825 |
15 | 33726547 |
16 | 521722083 |
17 | 9834245987 |
18 | 228276099483 |
19 | 6476476460303 |
20 | 221310304612835 |
21 | 9127636122908961 |
[1,1,1,1,1,5,17,43,145,633,4131,31831,267243, 2665825,33726547,521722083,9834245987, 228276099483,6476476460303,221310304612835, 9127636122908961] |